Example usage for java.lang ClassNotFoundException ClassNotFoundException

Introduction

In this page you can find the example usage for java.lang ClassNotFoundException ClassNotFoundException.

Prototype

public ClassNotFoundException(String s) 

Source Link

Document

Constructs a ClassNotFoundException with the specified detail message.

Usage

From source file:org.impalaframework.classloader.CustomClassLoader.java

public Class<?> loadClass(String className) throws ClassNotFoundException {

    Class<?> toReturn = loadParentClass(className);

    if (toReturn == null) {
        toReturn = getAlreadyLoadedClass(className);
    }/*from w w w .j av  a 2s.  co  m*/
    if (toReturn == null) {
        toReturn = loadCustomClass(className);
    }
    if (toReturn == null) {
        if (logger.isDebugEnabled())
            logger.debug("Class not found: " + className);
        throw new ClassNotFoundException(className);
    }
    return toReturn;
}

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From source file:org.impalaframework.interactive.classloader.TestClassLoader.java

public Class<?> loadClass(String className) throws ClassNotFoundException {

    Class<?> toReturn = null;

    if (!className.contains(testClassName)) {
        toReturn = loadParentClass(className);
        if (toReturn == null) {
            toReturn = getAlreadyLoadedClass(className);
        }/*from  www. j  a v a2  s  .  com*/
    }

    if (toReturn == null) {
        toReturn = loadCustomClass(className);
    }

    if (toReturn == null) {
        if (logger.isDebugEnabled())
            logger.debug("Class not found: " + className);
        throw new ClassNotFoundException(className);
    }

    // System.out.println("TestClassLoader: " + className + " loaded by " +
    // toReturn.getClassLoader());
    return toReturn;

}

---

From source file:org.apache.openaz.xacml.util.FactoryFinder.java

/**
 * Attempts to load a class using the given <code>ClassLoader</code>. If that fails and fallback is
 * enabled, the current <code>ClassLoader</code> is tried. If the <code>ClassLoader</code> is null, use
 * the context <code>ClassLoader</code> followed by the current <code>ClassLoader</code>.
 *
 * @param className the <code>String</code> name of the <code>Class</code> to load
 * @param cl the <code>ClassLoader</code> to use
 * @param doFallback if true, fall back to the current <code>ClassLoader</code> if the given
 *            <code>ClassLoader</code> fails
 * @return the <code>Class</code> for the given class name
 * @throws ClassNotFoundException if the <code>Class</code> cannot be found
 */// w  ww.  j av a 2  s.  c o  m
private static Class<?> getProviderClass(String className, ClassLoader cl, boolean doFallback)
        throws ClassNotFoundException {
    try {
        if (cl == null) {
            cl = Thread.class.getClassLoader();
            if (cl == null) {
                cl = FactoryFinder.class.getClassLoader();
                if (cl == null) {
                    throw new ClassNotFoundException("No ClassLoader() in current context");
                } else {
                    return cl.loadClass(className);
                }
            } else {
                return cl.loadClass(className);
            }
        } else {
            return cl.loadClass(className);
        }
    } catch (ClassNotFoundException ex) {
        if (doFallback) {
            return Class.forName(className, true, FactoryFinder.class.getClassLoader());
        } else {
            throw ex;
        }
    }
}

---

From source file:org.impalaframework.classloader.ModuleTestClassLoader.java

public Class<?> loadClass(String className) throws ClassNotFoundException {

    Class<?> toReturn = loadCustomClass(className);

    if (toReturn == null) {
        toReturn = loadParentClass(className);
    }//from ww  w . j a va2 s . c o  m

    if (toReturn == null) {
        toReturn = getAlreadyLoadedClass(className);
    }

    if (logger.isDebugEnabled()) {
        logger.debug("Loaded " + " class " + className + ": " + toReturn.getClassLoader());
    }

    if (toReturn == null) {
        if (logger.isDebugEnabled())
            logger.debug("Class not found: " + className);
        throw new ClassNotFoundException(className);
    }

    return toReturn;

}

---

From source file:com.wavemaker.tools.util.CFClassLoader.java

@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {

    if (this.resources == null) {
        throw new ClassNotFoundException("invalid search root: " + this.resources);
    } else if (name == null) {
        throw new ClassNotFoundException(MessageResource.NULL_CLASS.getMessage());
    }/*from   w ww .  ja v  a2 s.c om*/

    String classNamePath = name.replace('.', '/') + ".class";

    List<Resource> files = new ArrayList<Resource>();
    for (int i = 0; i < this.resources.length; i++) {
        files.addAll(this.fileSystem.listAllChildren(this.resources[i], null));
    }

    byte[] fileBytes = null;
    try {
        InputStream is = null;
        JarFile jarFile = null;

        for (Resource entry : files) {
            String resourcePath = getPath(entry);
            int len1 = resourcePath.length();
            int len2 = classNamePath.length();
            if (len1 > len2) {
                if (resourcePath.substring(len1 - len2, len1).equals(classNamePath)) {
                    is = entry.getInputStream();
                    break;
                }
            }
        }

        if (is != null) {
            try {
                fileBytes = IOUtils.toByteArray(is);
                is.close();
            } finally {
                if (jarFile != null) {
                    jarFile.close();
                }
            }
        }
    } catch (IOException e) {
        throw new ClassNotFoundException(e.getMessage(), e);
    }

    if (name.contains(".")) {
        String packageName = name.substring(0, name.lastIndexOf('.'));
        if (getPackage(packageName) == null) {
            definePackage(packageName, "", "", "", "", "", "", null);
        }
    }

    Class<?> ret;
    try {
        if (fileBytes == null) {
            ret = ClassLoaderUtils.loadClass(name, this.parentClassLoader);
        } else {
            ret = defineClass(name, fileBytes, 0, fileBytes.length);
        }
    } catch (WMRuntimeException ex) {
        ret = null;
    }

    if (ret == null) {
        throw new ClassNotFoundException(
                "Couldn't find class " + name + " in expected classpath: " + this.resources);
    }

    return ret;
}

---

From source file:org.apache.logging.log4j.core.selector.TestClassLoader.java

@Override
protected Class<?> findClass(final String name) throws ClassNotFoundException {
    final String path = name.replace('.', '/').concat(".class");
    final URL resource = super.getResource(path);
    if (resource == null) {
        throw new ClassNotFoundException(name);
    }/*w w  w  . j a  va  2s  .  c om*/
    try {
        final URLConnection uc = resource.openConnection();
        final int len = uc.getContentLength();
        final InputStream in = new BufferedInputStream(uc.getInputStream());
        final byte[] bytecode = new byte[len];
        try {
            IOUtils.readFully(in, bytecode);
        } finally {
            Closer.closeSilently(in);
        }
        return defineClass(name, bytecode, 0, bytecode.length);
    } catch (final IOException e) {
        Throwables.rethrow(e);
        return null; // unreachable
    }
}

---

From source file:com.opensymphony.webwork.util.classloader.stores.ResourceStoreClassLoader.java

protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
    Class clazz = findLoadedClass(name);

    if (clazz == null) {
        clazz = fastFindClass(name);/*from  w w  w  .  ja v  a  2  s .c o  m*/

        if (clazz == null) {

            final ClassLoader parent = getParent();
            if (parent != null) {
                clazz = parent.loadClass(name);
                log.debug("loaded from parent: " + name);
            } else {
                throw new ClassNotFoundException(name);
            }

        } else {
            log.debug("loaded from store: " + name);
        }
    }

    if (resolve) {
        resolveClass(clazz);
    }

    return clazz;
}

---

From source file:com.fuzhepan.arpc.client.ProxyHandler.java

public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    log.debug("invoke was called!");

    if (method.getName().equals("toString")) {
        return "toString method was called";
    }//from  ww w.  j  ava  2s  .c o  m

    RpcContext rpcContext = new RpcContext(interfaceName, method.getName(), method.getParameterTypes(), args);

    //get service info and load balance
    List<HostPortPair> serviceList = RpcConfig.getServiceList(serviceName);
    if (serviceList == null || serviceList.size() == 0)
        throw new ClassNotFoundException("not find service : " + serviceName);
    int index = requestCount.get() % serviceList.size();
    if (requestCount.get() > 100)
        requestCount.set(0);
    else
        requestCount.getAndIncrement();
    HostPortPair hostPort = serviceList.get(index);

    Socket socket = new Socket(hostPort.host, hostPort.port);
    ObjectOutputStream objectOutputStream = new ObjectOutputStream(socket.getOutputStream());
    objectOutputStream.writeObject(rpcContext);
    objectOutputStream.flush();

    ObjectInputStream objectInputStream = new ObjectInputStream(socket.getInputStream());
    Object response = objectInputStream.readObject();

    objectInputStream.close();
    objectOutputStream.close();
    socket.close();

    Class methodReturnType = method.getReturnType();
    return methodReturnType.cast(response);
}

---

From source file:com.wavemaker.commons.classloader.ThrowawayFileClassLoader.java

@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {

    if (this.classPath == null) {
        throw new ClassNotFoundException("invalid search root: " + this.classPath);
    } else if (name == null) {
        throw new ClassNotFoundException(MessageResource.NULL_CLASS.getMessage());
    }/*w  w  w  .j  a  v a 2  s .  c o  m*/

    String classNamePath = name.replace('.', '/') + ".class";

    byte[] fileBytes = null;
    try {
        InputStream is = null;
        JarFile jarFile = null;

        for (Resource entry : this.classPath) {
            if (entry.getFilename().toLowerCase().endsWith(".jar")) {
                jarFile = new JarFile(entry.getFile());
                ZipEntry ze = jarFile.getEntry(classNamePath);

                if (ze != null) {
                    is = jarFile.getInputStream(ze);
                    break;
                } else {
                    jarFile.close();
                }
            } else {
                Resource classFile = entry.createRelative(classNamePath);
                if (classFile.exists()) {
                    is = classFile.getInputStream();
                    break;
                }
            }
        }

        if (is != null) {
            try {
                fileBytes = IOUtils.toByteArray(is);
                is.close();
            } finally {
                if (jarFile != null) {
                    jarFile.close();
                }
            }
        }
    } catch (IOException e) {
        throw new ClassNotFoundException(e.getMessage(), e);
    }

    if (name.contains(".")) {
        String packageName = name.substring(0, name.lastIndexOf('.'));
        if (getPackage(packageName) == null) {
            definePackage(packageName, "", "", "", "", "", "", null);
        }
    }

    Class<?> ret;
    if (fileBytes == null) {
        ret = ClassLoaderUtils.loadClass(name, this.parentClassLoader);
    } else {
        ret = defineClass(name, fileBytes, 0, fileBytes.length);
    }

    if (ret == null) {
        throw new ClassNotFoundException(
                "Couldn't find class " + name + " in expected classpath: " + this.classPath);
    }

    return ret;
}

---

From source file:com.github.trask.sandbox.isolation.ClassLoaderExtension.java

Class<?> findClass(String name) throws ClassNotFoundException {
    if (bridgeInterface != null && bridgeInterface.getName().equals(name)) {
        return bridgeInterface;
    }//from   w  w w  . j  ava 2  s.c  om
    String resourceName = name.replace('.', '/') + ".class";
    InputStream input = extensibleClassLoader.getResourceAsStream(resourceName);
    if (input == null) {
        throw new ClassNotFoundException(name);
    }
    byte[] b;
    try {
        b = IOUtils.toByteArray(input);
    } catch (IOException e) {
        throw new IllegalStateException(e);
    }
    if (name.indexOf('.') != -1) {
        String packageName = StringUtils.substringBeforeLast(name, ".");
        extensibleClassLoader.createPackageIfNecessary(packageName);
    }
    try {
        return extensibleClassLoader.defineClass(name, b);
    } catch (IOException e) {
        throw new ClassNotFoundException(name, e);
    }
}

---

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